Free Tools - Color Contrast Checker
Make sure your design is readable for everyone
Test color combinations against accessibility requirements for contrast.
WCAG Compliance Results
Normal Text
Regular text (under 18pt or 14pt bold)
WCAG AA
Minimum 4.5:1
WCAG AAA
Enhanced 7:1
Large Text
18pt and larger or 14pt bold
WCAG AA
Minimum 3:1
WCAG AAA
Enhanced 4.5:1
Contrast Ratio
21.00:1
Pass
Preview
Sample Large Text
Sample normal text. Experiment with the settings on this page to see the result here.
Why color contrast matters
Color contrast plays a critical role in making digital content readable and usable for everyone. Insufficient contrast between text and background can make content difficult or impossible to read, even for users without diagnosed disabilities — especially in low-light conditions or on mobile devices.
For people with visual impairments, poor contrast is one of the most common and blocking accessibility barriers.
Who is affected by poor contrast?
Low color contrast primarily impacts users with:
Low vision — difficulty distinguishing text from backgrounds
Color vision deficiencies (color blindness) — inability to differentiate certain color combinations
Age-related vision changes — reduced contrast sensitivity
Cognitive and reading impairments — increased effort to process content
Dyslexia and learning differences — harder letter recognition, slower reading, more eye strain
Temporary or situational limitations — glare, screen brightness, fatigue
Improving contrast benefits all users, not only those with permanent disabilities.
Color Contrast Checker
Understanding color contrast and accessibility standards for better readability.
Color contrast ensures that text, icons, and interface elements are clearly readable against their background. Insufficient contrast can make content difficult or impossible to read, especially for users with visual impairments, color vision deficiency, or when viewing screens in bright light or on mobile devices. Good contrast improves usability for everyone—not just users with disabilities.
Poor contrast impacts a wide range of users, including people with low vision, color blindness, age-related vision changes, and cognitive impairments. It also affects users without diagnosed disabilities when screens are used outdoors, in low-light environments, or on low-quality displays. In practice, weak contrast reduces readability and increases bounce rates for all users.
Accessibility standards such as WCAG require a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text to ensure readability. These requirements are also aligned with European accessibility regulations. EaseAccess24 continuously monitors and helps identify contrast issues to support compliance and improve real-world usability.